Syn.: Bacidia egenula (Nyl.) Arnold

Saxicolous, on sandstone rocks, or corticolous, on Alnus and Pyrus.

Belgium: Mar.: RRR, Fl.: RRR, Camp.: RRR, Brab.: RRR, Mosan: RR.

Luxembourg: Lorr.: RR.

France: - .

The identity of the material is doubtful and requires further studies.

Lit.: Di: 47, L3: 26.